CN114234888A - Angle sensor positioning tool and corner monitoring device thereof - Google Patents

Abstract

The angle sensor positioning tool (20) is used for monitoring the action of mechanical equipment and comprises a transmission plate (21) and an assembly component (22), wherein the transmission plate (21) is provided with a sensor rotating shaft mounting hole; in the use state: the transmission plate (21) is fixedly connected with a swing arm of the mechanical equipment through an assembly component (22), the breadth of the transmission plate and the breadth of the swing arm of the mechanical equipment are mutually parallel and overlapped, and a sensor rotating shaft mounting hole is mutually overlapped with a central shaft of a swing arm shaft of the mechanical equipment. The corner monitoring device adopting the positioning tool is simple to install, does not need to change the existing mechanical equipment greatly, does not need to be coaxial and centered particularly, and is not easy to lag or deviate in measurement signals.

Description

Angle sensor positioning tool and corner monitoring device thereof

Technical Field

The invention belongs to the field of sensing measurement of mechanical equipment, and particularly relates to a rotation angle monitoring device.

Background

In various mechanical devices, angle sensors are used to monitor the rotational motion. Generally, the housing is fixed, and the rotating shaft rotates with the monitored object, or the rotating shaft is fixed and the housing follows. The monitoring signal is transmitted in a wired or wireless mode.

The electro-hydraulic governor of a conventional power plant uses a swing arm 90 to indicate its operating state (fig. 4). The swing arm 90 is a metal plate member (fig. 5) having a fan-shaped main body, and is provided with a hollowed hole to reduce the mass, and the top end is provided with an observation scale. The digital transformation is carried out on the equipment, and the following problems are caused when the angle sensor is installed: 1) the speed regulator is obviously changed by adopting the existing transmission mechanism, such as a coupler, a transmission rod (belt, chain, gear) or a magnetic coupling piece, or the transmission parts have transmission lag and data distortion; 2) the magnetic base is used for fixing, and the electro-hydraulic conversion of the speed regulator can be influenced by the magnetic field of the magnetic base; 3) the pipe clamp is used for fixing, the pipe clamp does not have good centering performance on the cambered surface and the inclined surface, and the installation difficulty is high.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: how to install angle sensor additional to current mechanical equipment realizes less change and accurate measurement.

The invention provides an angle sensor positioning tool which is used for monitoring actions of mechanical equipment. The mechanical equipment is provided with a swing arm and a swing arm shaft which are mutually linked, and one end of the swing arm shaft is fixedly installed in a swing arm shaft installation hole of the swing arm. The angle sensor positioning tool comprises a transmission plate and an assembly component, wherein the transmission plate is provided with a sensor rotating shaft mounting hole. In the use state: the driving plate with the swing arm by assembly subassembly fixed connection, the driving plate with the breadth of swing arm is parallel to each other and overlaps, sensor pivot mounting hole with the center pin of swing arm axle coincides each other.

The "web" referred to above refers to the viewing surface of the component having the largest projected area in the perspective direction.

Optionally, the driving plate with the swing arm is equipped with unsmooth setting element of mutually supporting respectively, the driving plate with the swing arm only passes through unsmooth setting element is contradicted and is connected, the assembly subassembly is to run through unsmooth setting element's bolt is vice.

Adopt above-mentioned structure, do not rely on the assembly subassembly location, set up unsmooth setting element to assembly subassembly setting can realize accurate location on unsmooth setting element, again can rapid Assembly. If the assembly component has the positioning function, the assembly process is complex.

Optionally, the main bodies of the swing arm and the transmission plate are both fan-shaped, the swing arm is provided with a first through hole and a second through hole, and the swing arm shaft mounting hole, the second through hole and the first through hole are sequentially distributed on a fan-shaped central angle bisector along a radiation direction; the transmission plate is provided with a first boss corresponding to and matched with the first through hole and a second boss corresponding to and matched with the second through hole, the first boss is embedded into the first through hole, and the second boss is embedded into the second through hole.

The through hole-boss is used as a concave-convex positioning piece and distributed along the fan-shaped central angular bisector, and the concave-convex positioning piece is simple in structure and convenient to process and manufacture.

Optionally, the circumference cross-section of driving plate is the zigzag, the driving plate is including being parallel to each other, integrated into one piece's driving plate head and driving plate afterbody, first boss with the second boss sets up the driving plate head, sensor pivot mounting hole sets up the driving plate afterbody, the driving plate afterbody with the swing arm is kept apart each other.

By adopting the structure, the tail part of the transmission plate is isolated from the swing arm, so that a space is reserved, and the angle sensor can be conveniently installed.

Optionally, the assembly subassembly includes splint and splint bolt, splint are equipped with the splint screw, the one end of splint bolt is equipped with the bolt handle, splint with the driving plate is respectively from both sides centre gripping and fixed mounting in on the swing arm, the other end of splint bolt passes the central through-hole of first boss with first through-hole and with the meshing of splint screw.

By adopting the structure, the angle sensor positioning tool can be conveniently and quickly fixedly installed on the swing arm.

Optionally, the clamping plate is provided with a third boss correspondingly matched with the first through hole, the clamping plate screw hole is located in the center of the third boss, and the third boss is embedded into the first through hole and isolated from the first boss.

Optionally, the main bodies of the first boss, the second boss and the third boss are all cylindrical, the free ends of the first boss, the second boss and the third boss are all in the shape of a truncated cone, and the side faces of the truncated cones of the first boss, the second boss and the third boss are in abutting connection with the swing arm.

The line contact between the through hole and the lug boss is adopted, so that the influence of uneven planes except for the contact line in the installation and use process is avoided; meanwhile, the side surface of the truncated cone can compensate for the deviation of the fit dimension caused by design, processing or abrasion, and the stable installation, accurate positioning and good applicability of the transmission plate and the swing arm are ensured.

Optionally, the third boss is located at the center of the clamping plate, and the clamping plate is convex-moon-shaped.

The convex moon-shaped clamping plate is adopted, so that the first through hole can be covered, a user can conveniently hold the clamping plate by hands, and a special assembling tool is not required; the accidental collision or collision between the clamping plate and the swing arm can be reduced.

The invention also provides a corner monitoring device. The corner monitoring device comprises an angle sensor, a fixing assembly and the angle sensor positioning tool, wherein the angle sensor comprises a sensor shell and a sensor rotating shaft, the sensor shell is fixedly installed on the fixing assembly, and the sensor rotating shaft is detachably and fixedly installed in a sensor rotating shaft installing hole.

By adopting the structure, when in use, the weight of the angle sensor positioning tool is borne by the swing arm, so that the distortion of a measurement signal can be avoided; when the angle sensor positioning tool is not used, the angle sensor positioning tool can be detached from the angle sensor, and accidental damage to the angle sensor can be avoided.

Optionally, the fixing assembly includes a supporting rack and a supporting rack, one end of the fixing plate is fixedly connected to the sensor housing, and the other end of the fixing plate is detachably and fixedly mounted to the supporting rack.

By adopting the structure, the fixing plate for mounting the angle sensor is detachably mounted on the supporting rack, and the supporting rack can independently support the angle sensor, so that the existing mechanical equipment is not required to be changed, and the angle sensor positioning tool are convenient to mount and dismount.

The beneficial effects of the implementation of the invention are mainly as follows:

(1) the transmission plate is fixedly connected with the swing arm of the mechanical equipment through the assembly component, and the breadth of the transmission plate and the breadth of the swing arm are parallel to each other and are overlapped. The installation process is simple, coaxial centering is not needed to be carried out particularly, and the existing mechanical equipment is not needed to be changed greatly.

(2) When the angle sensor positioning tool is used, the weight of the angle sensor positioning tool is borne by the swing arm, and the transmission plate and the swing arm rotate synchronously, so that the rotating angle of the swing arm can be accurately transmitted to the angle sensor, and a measuring signal is not easy to lag or deviate.

(3) The support rack can independently support the angle sensor, so that the existing mechanical equipment does not need to be changed, and the angle sensor positioning tool are convenient to install and disassemble.

Drawings

The following drawings should be considered in conjunction with the detailed description. In the drawings:

FIG. 1 is a perspective view of a second embodiment including the first embodiment, with the swing arm not shown;

FIG. 2 is a perspective view showing another use state of the second embodiment;

FIG. 3 is a sectional view of an assembly of the embodiment shown in FIG. 1 with a swing arm, the section being a circumferential section including a bisector of a center angle of the swing arm;

FIG. 4 is a schematic view of the swing arm assembly of an electro-hydraulic governor for a power generating apparatus;

fig. 5 is a photograph of the swing arm of fig. 4.

In the drawings, each reference numeral represents:

10-fixing plate, 101-fixing plate head, 102-fixing plate tail and 11-fixing plate mounting hole,

20-angle sensor positioning tool, 21-transmission plate, 2101-transmission plate head, 2102-transmission plate tail, 211-first boss, 212-second boss, 22-assembly component, 221-clamping plate, 221 a-clamping plate screw hole, 2211-third boss, 222-clamping plate bolt, 222 a-bolt handle,

30-angle sensor, 31-sensor rotating shaft, 311-fixed through nail, 32-sensor shell,

40-supporting rack, 41-base, 42-supporting arm, 421-supporting rod, 422-connecting fastener,

801-swing arm rotating shaft, 90-swing arm, 901-fastening bolt, 91-first through hole and 92-second through hole.

Detailed Description

For a fuller understanding of the present invention, reference should be made to the following description taken in conjunction with the accompanying drawings.

In this specification: the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer" are used to indicate the orientation, based on the viewing angle shown in the drawings; "circumferential" means a circle with its center at the center of the cross-section; "breadth" refers to the perspective-oriented viewing surface of a component having the largest projected area.

Example one

The angle sensor positioning tool 20 is used for monitoring the action of an electro-hydraulic speed regulator of power generation equipment.

Referring to fig. 4 and 5, the main body of the swing arm 90 of the governor is fan-shaped. The thickness of the edge of the fan-shaped arc is larger, so that a structure that the top is covered with a cap is formed, the top surface is provided with observation scales, and the observation scales are matched with corresponding scale pointers (not drawn in the figure) for use. The circle center of the sector is provided with a swing arm shaft mounting hole. The tail part of the swing arm 90 positioned below the mounting hole of the swing arm shaft is provided with a groove in the middle to be divided into a left part and a right part. The swing arm shaft 801 of the speed governor is fixedly mounted in the swing arm shaft mounting hole by fastening bolts 901, and the fastening bolts 901 penetrate through the left and right portions of the tail of the swing arm 90. The swing arm 90 is linked with the swing arm shaft 801, and the observation scale on the top surface moves relative to the scale pointer, thereby indicating the working state of the speed regulator. The swing arm 90 is provided with a first through hole 91 and a second through hole 92 which are circular. The swing arm shaft mounting hole, the second through hole 92 and the first through hole 91 are sequentially distributed on a fan-shaped central angle bisector along the radiation direction.

In other embodiments, the swing arm 90 may be provided with other types of sculptured structures to reduce mass. For example at least two through holes in the shape of a bar, triangle, circular arc, square, oval, star or flower, or a combination of the above different through holes.

In other embodiments, the angle sensor positioning tool 20 is suitable for a mechanical device, the swing arm 90 may have a long strip shape, and thus is a swing rod.

Referring to fig. 1, 2 and 3, the angle sensor positioning tool 20 includes a driving plate 21 and an assembling component 22. The transmission plate 21 is provided with a sensor rotation shaft mounting hole for fixedly mounting the sensor rotation shaft 31. In the use state, the driving plate 21 is fixedly connected with the swing arm 90 through the assembling component 22, and the breadth surfaces of the driving plate 21 and the swing arm 90 are parallel to each other and are overlapped. The sensor shaft mounting hole coincides with the center axis of the swing arm shaft mounting hole, so that the sensor shaft 31 coincides with the center axis of the swing arm shaft 801. When the swing arm 90 is linked with the swing arm shaft 801, the positioning tool 20 of the angle sensor is driven, so that the angle sensor 30 measures the rotation angle of the swing arm 90 and the swing arm shaft 801. The angle sensor 30 transmits the measurement data (or measurement signals) to the device that monitors the governor. The transmission mode is a wired mode or a wireless mode (not shown in the drawing), so that the working state of the governor can be remotely monitored and data can be recorded.

Specifically, the transmission plate 21 and the fitting assembly 22 employ members of an aluminum alloy material. The aluminum alloy member has a low density and hardness, does not interfere with or damage the swing arm, and is wear resistant and long in service life.

In other embodiments, the driving plate 21 and the assembly 22 may be made of polypropylene material, and a wear-resistant layer or piece of aluminum alloy may be locally disposed to further reduce the weight.

The driving plate 21 and the swing arm 90 are respectively provided with concave-convex positioning pieces which are matched with each other, the two are only in butt connection through the concave-convex positioning pieces, and the assembly component 20 is a bolt pair which penetrates through the concave-convex positioning pieces.

The main body of the transmission plate 21 is fan-shaped, and is provided with a first boss 211 correspondingly matched with the first through hole 91 and a second boss 212 correspondingly matched with the second through hole 92. In the use state, the first boss 211 is fitted into the first through hole 91, and the second boss 212 is fitted into the second through hole 92. Namely: the concave-convex positioning pieces are divided into two groups, and each group comprises a circular through hole and a boss. Namely: two groups of through holes-bosses are adopted as concave-convex positioning pieces and are distributed along the bisector of the fan-shaped central angle.

In other embodiments, the concave-convex positioning element may be at least two through holes with a shape of a strip, a triangle, a ring arc, a square, an ellipse, a star or a flower, or a combination of the above through holes with different shapes, and a corresponding matched protrusion element arranged on the driving plate 21, which are arranged on the swing arm 90. The concave-convex positioning pieces are in a mutual excessive matching relationship, and certain processing precision is required so as to ensure that the driving plate 21 and the swing arm 90 are stably installed and accurately positioned.

The circumferential section of the drive plate 21 is zigzag, and includes a drive plate head 2101 and a drive plate tail 2102 which are parallel to each other and integrally formed. The head 2101 of the driving plate is provided with a first boss 211 and a second boss 212, and the tail 2102 of the driving plate is provided with a sensor rotating shaft mounting hole. In the use state: the driving plate tail 2102 and the swing arm 90 are isolated from each other, so that enough installation space is reserved for the sensor rotating shaft 31.

The fitting assembly 22 includes a clamp plate 221 and a clamp plate bolt 222. The clamp plate 221 has a clamp plate screw hole 221a, and one end of the clamp plate bolt 222 has a bolt handle 222 a. In a use state, the other end of the clamp bolt 222 passes through the center through hole of the first boss 211 and the first through hole 91 to engage with the internal thread of the clamp screw hole 221a, so that the clamp plate 221 and the driving plate 21 are clamped from both sides and fixedly mounted on the swing arm 90. Namely: the assembly 22 is arranged at the center of a set of through holes-bosses, and the clamping plate 221 is used as a nut of a bolt pair.

In other embodiments, the assembly member 22 can be at least two elastic clamping members for clamping the edges of the swing arm 90 and the clamping plate 221 together; the assembly component 22 can adopt at least two sets of bolt pairs, including bolts and nuts, penetrating through the edges of the swing arm 90 and the clamping plate 221 to fixedly connect the two; or the assembly component 22 adopts at least two screws to fixedly connect the top ends of the swing arm 90 and the clamping plate 221 on the premise of not damaging the observation scale of the swing arm 90. Namely: the existing swing arm 90 needs to be drilled or slotted with simple modifications.

The center of the clamping plate 221 is provided with a third boss 2211 correspondingly matched with the first through hole 91, and the clamping plate screw hole 221a is arranged at the center of the third boss 211. In a use state, the third boss 211 is inserted into the first through hole 91 and is isolated from the first boss 211.

The bodies of the first boss 211, the second boss 212 and the third boss 2211 are all cylindrical, and the free ends thereof are all in the shape of a truncated cone. In the use state, the swing arms 90 are butted and connected through the side surfaces of the cone frustum. Namely: the edges of the two sides of the first circular through hole 91 are linearly abutted against the side surfaces of the circular truncated cones of the first cylindrical boss 211 and the third cylindrical boss 2211, and the edge of one side of the first circular through hole 91 is linearly abutted against the side surface of the circular truncated cone of the second cylindrical boss 212. The side surface of the cone frustum can compensate for the size deviation caused by design, processing or abrasion of each part, the mutual matching is not influenced, and the applicability is good.

The clamp plate 221 is convex moon shaped with its top arc fitting the top of the swing arm 90, thus avoiding accidental touch. Accordingly, the third boss is cylindrical with a missing portion, and is also convex. During assembly, a user can hold the clamping plate 221 by one hand and tightly screw the bolt handle 222a by the other hand without using a special assembly tool.

In other embodiments, one end of the clamp bolt 222 may be welded at the center of the first boss 211, the clamp screw hole 221a may be replaced with a through hole, and the clamp plate 221 may be fixedly mounted on the clamp bolt 222 by a nut. Another clamping plate bolt 222 can be disposed or penetrated at the center of the second boss 211, and two clamping plate screw holes 221a are correspondingly disposed on the clamping plate 221.

In other embodiments, the clamping plate 221 can be shield-shaped or hexagonal, and the third boss 2211 and the clamping plate screw hole 221a can be located off-center of the clamping plate 221. The shape of the clamping plate 221 needs to satisfy: the coverage range does not exceed the driving plate 21 and the swing arm 90, and the non-scheduled interference with the swing arm 90 does not occur.

Example two

And the corner monitoring device is used for monitoring the action of the electro-hydraulic speed regulator of the traditional power generation equipment.

Referring to fig. 1, 2 and 3, the rotation angle monitoring device includes an angle sensor 30, a fixing component and an angle sensor positioning tool 20 according to a first embodiment.

The angle sensor 30 includes a sensor housing 32 and a sensor rotary shaft 31. In a use state, the sensor housing 32 is fixedly mounted on the fixing component, and the sensor rotating shaft 31 is detachably and fixedly mounted in a sensor rotating shaft mounting hole of the angle sensor positioning tool 20. The angle sensor 30 transmits the measurement signal by wire or wirelessly, or is integrated with a measurement signal processing unit, a data processing and storing unit, a communication unit, and an alarm unit.

Specifically, the sensor rotary shaft 31 is mounted in the sensor rotary shaft mounting hole by a fixing through-nail 311. The fixing through-nail 311 is vertical to and penetrates through the sensor rotation shaft 31 and also penetrates through the side wall of the sensor rotation shaft mounting hole. One end of the fixing nail 311 is a nut, and the other end is provided with a thread and is fastened by a nut. The middle part of the fixing through-nail 311 is excessively matched with the through hole on the sensor rotating shaft 31, and is provided with a self-lubricating polytetrafluoroethylene coating.

In other embodiments, the sensor spindle 31 is mounted in the sensor spindle mounting hole by a screw. The screw penetrates through the side wall of the sensor rotating shaft mounting hole from one side and vertically abuts against the sensor rotating shaft 31.

The fixing assembly includes a fixing plate 10 and a support stand 40. At least a plurality of fixing mounting holes 11 are formed at one end of the fixing plate 10, and the fixing mounting holes 11 are fixedly connected with the sensor housing 32 through screws. In a use state, the other end of the fixing plate 10 is detachably fixedly mounted to the support stand 40.

Specifically, the fixation plate 10 is zigzag-shaped, and includes a fixation plate head 101 and a fixation plate tail 102 that are parallel to each other. The angle sensor 30 is installed on the head 101 of the fixing plate, and the sensor rotating shaft 31 vertically penetrates through the head 101 of the fixing plate and faces away from the tail 102 of the fixing plate. The support stand 40 includes a base 41 and a movable arm 42, and the movable arm 42 is formed by connecting a plurality of struts 421 by a plurality of connecting fasteners 422. The fixing plate tail portion 102 is also provided with a fixing mounting hole 11. The free end of the movable arm 42 is provided with a support 421, the end of which is externally threaded and can pass through the fixed mounting hole 11, so that the movable arm can be assembled with the fixed plate tail 102 through a nut.

The assembly and installation process of the rotation angle monitoring device of the second embodiment comprises the following steps:

s10, preparing a combination of the angle sensor 30 and the fixed plate 10, and mounting the fixed plate 10 on the support rack 40;

s20, mounting the angle sensor positioning tool 20 on a swing arm 90 of the speed regulator;

and S30, mounting the sensor rotating shaft 31 of the angle sensor 30 obtained in the step 10 in the sensor rotating shaft mounting hole of the angle sensor positioning tool 20 obtained in the step 20.

S40, debugging and setting the angle sensor 30.

Before step S20, it is necessary to ensure the cleanness of the two through holes of the swing arm 90 and the two bosses of the driving plate 21 to avoid the influence of foreign matters.

In step S20, the clamping plate 221 can be rotated appropriately to observe and ensure whether the periphery of the first through hole 91 of the swing arm 90 maintains a uniform gap with the clamping plate 221. After the step of S20, it needs to be checked again. If not, the clamping plate 221 is loosened for adjustment.

The steps S20 and S10 may be performed in reverse order or in synchronization. Step S40 may be performed at the latest, i.e., in a test environment, to perform debugging, setting, checking, calibration, or the like of the angle sensor 30.

The corner monitoring device of the second embodiment comprises the following steps in a disassembly process after use:

F10. the sensor rotating shaft 31 is detached from the sensor rotating shaft mounting hole;

F20. detaching the fixing plate 10 from the support stand 40;

F30. the angle sensor positioning tool 20 is detached from the swing arm 90.

Step F20 or step F30 may be omitted. The support rack 40, the angle sensor positioning tool 20, the angle sensor 30 and the fixing plate 10 are combined, and the three parts are separated from each other and then stored. Or, the angle sensor positioning tool 20 is separated from the other two parts and then stored.

When not in use, the angle sensor 30 is separated from the angle sensor positioning tool 20, so that the accidental damage of the angle sensor 30 caused by the load of the angle sensor positioning tool 20 can be avoided. When the sensor rotating shaft mounting structure is used, the sensor rotating shaft 31 is fixed in the sensor rotating shaft mounting hole, and the sensor rotating shaft mounting structure can be completed quickly.

The above exemplary embodiments show the technical idea and features of the present invention, so that those skilled in the art can understand the contents of the present invention and implement the present invention, but do not constitute any limitation to the scope of the present invention. Simple modifications and equivalents of the above-described embodiments are within the scope of the invention.

Claims (10)

1. An angle sensor positioning tool (20) is used for monitoring the action of mechanical equipment, the mechanical equipment is provided with a swing arm (90) and a swing arm shaft (801) which are linked with each other, and one end of the swing arm shaft (801) is fixedly installed in a swing arm shaft installation hole of the swing arm (90); the device is characterized by comprising a transmission plate (21) and an assembly component (22), wherein the transmission plate (20) is provided with a sensor rotating shaft mounting hole;

in the use state: the driving plate (21) and the swing arm (90) are fixedly connected through the assembling component (22), the breadth of the driving plate (21) and the breadth of the swing arm (90) are parallel to each other and are overlapped, and the installation hole of the rotating shaft of the sensor and the central shaft of the swing arm shaft (801) are overlapped with each other.

2. The angle sensor positioning tool (20) according to claim 1, wherein: the assembly structure is characterized in that the transmission plate (21) and the swing arm (90) are respectively provided with concave-convex positioning pieces which are matched with each other, the transmission plate (21) and the swing arm (90) are only connected through the concave-convex positioning pieces in an abutting mode, and the assembly component (20) is a bolt pair which penetrates through the concave-convex positioning pieces.

3. The angle sensor positioning tool (20) according to claim 2, wherein the main bodies of the swing arm (90) and the transmission plate (21) are fan-shaped, the swing arm (90) is provided with a first through hole (91) and a second through hole (92), and the swing arm shaft mounting hole, the second through hole (92) and the first through hole (91) are sequentially distributed on a fan-shaped central angle bisector along a radiation direction;

the transmission plate (21) is provided with a first boss (211) correspondingly matched with the first through hole (91) and a second boss (212) correspondingly matched with the second through hole (92), the first boss (211) is embedded into the first through hole (91), and the second boss (212) is embedded into the second through hole (92).

4. The angle sensor positioning tool (20) according to claim 3, wherein the circumferential cross section of the transmission plate (21) is zigzag, the transmission plate (21) comprises a transmission plate head portion (2101) and a transmission plate tail portion (2102) which are parallel to each other and integrally formed, the first boss (211) and the second boss (212) are arranged on the transmission plate head portion (2101), the sensor rotating shaft mounting hole is arranged on the transmission plate tail portion (2102), and the transmission plate tail portion (2102) and the swing arm (90) are isolated from each other.

5. The angle sensor positioning tool (20) according to claim 3, wherein the assembling component (22) comprises a clamping plate (221) and a clamping plate bolt (222), the clamping plate (221) is provided with a clamping plate screw hole (221a), and one end of the clamping plate bolt (222) is provided with a bolt handle (222 a);

the clamping plate (221) and the transmission plate (21) are clamped from two sides and fixedly mounted on the swing arm (90), and the other end of the clamping plate bolt (222) penetrates through the central through hole of the first boss (211) and the first through hole (91) to be meshed in the clamping plate screw hole (221 a).

6. The angle sensor positioning tool (20) according to claim 5, wherein the clamping plate (221) is provided with a third boss (2211) correspondingly matched with the first through hole (91), and the clamping plate screw hole (221a) is located in the center of the third boss (211); the third boss (211) is embedded in the first through hole (91) and is isolated from the first boss (211).

7. The angle sensor positioning tool (20) according to claim 6, wherein the second through hole (92) and the first through hole (91) are both circular; the main bodies of the first boss (211), the second boss (212) and the third boss (2211) are cylindrical, the free ends of the first boss, the second boss and the third boss are in a cone frustum shape, and the side faces of the cone frustums of the first boss, the second boss and the third boss are in abutting connection with the swing arm (90).

8. The angle sensor positioning tool (20) according to claim 7, wherein the third boss (2211) is located at the center of the clamping plate (221), and the clamping plate (221) is convex-moon-shaped.

9. A rotation angle monitoring device, characterized by, include angle sensor location frock (20), angle sensor (30) and fixed subassembly of any one of claim 1 ~ 8, angle sensor (30) include sensor shell (32) and sensor pivot (31), sensor shell (32) fixed mounting is in on the fixed subassembly, sensor pivot (31) detachably fixed mounting in the sensor pivot mounting hole.

10. The rotation angle monitoring device according to claim 9, wherein the fixing assembly comprises a fixing plate (10) and a supporting stand (40), one end of the fixing plate (10) is fixedly connected with the sensor housing (32), and the other end of the fixing plate (10) is detachably and fixedly mounted with the supporting stand (40).

Images